Flowmeter

A flowmeter and counter technology, applied in the field of volumetric flow metering instruments, can solve problems such as decreased measurement accuracy, reduced liquid pressure, and easy wear of parts, and achieve stable liquid flow, small pressure loss, and long service life. Effect

Inactive Publication Date: 2008-03-19
陈还喜
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing volumetric flowmeters have the following disadvantages during use: first, when the liquid passes through the flowmeter, turbulent flow will be generated, which will reduce the pressure of the liquid, resulting in a decrease in measurement accuracy; second, since crude oil contains various Impurities, the parts used for metering in the flowmeter are easy to wear and often get stuck

Method used

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0012] As shown in Figures 1 and 2, the flowmeter includes a metering body 1, a housing 2, a support 3, an upper cover 4 and a large character wheel counter 5, and is characterized in that: the metering body 1 is provided with two pairs symmetrical to the main shaft 6 Distributed and connected scrapers 7, and a cylindrical rotor 8 with the main shaft 6 as the center, the outer end of the scraper 7 runs through the grooves left on the wall of the rotor 8 and can stretch back and forth radially, the scraper 7 The inner end of the rotor is in contact with the cam 11 fixed on the main shaft 6 through the roller 10 with the roller bearing 9, and the two ends of the rotor 8 are connected with the bearings 12 at the two ends of the main shaft.

[0013] When the liquid flows in from the inlet 16 and the scraper 7 rotates from position a to position b, the closed cavity betwee...

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Abstract

The invention discloses a flow meter with smooth operation, high measuring precision and long service life, and the flow meter comprises a metering body, a casing, a supporting seat, an upper cover, and a large print wheel counter, wherein, a plurality of pairs of mutually connected scrapers which are symmetrically distributed with the chief axis as the center are arranged inside the metering body, a circular cylinder model rotor adopts the chief axis as the center is arranged inside the metering body, the outer ends of the scrapers penetrate a gutter bar reserved on the rotor wall and can be expanded backward and forward along the radial direction, the inner ends of the scrapers contact with a cam fixed on the chief axis through a roller with a bearing, and the two ends of the rotor is connected with the bearing arranged on the two ends of the chief axis with. The volumetric flow meter is a metering device for continuously measuring the volume flow of the liquid inside a sealed pipeline. The invention is suitable for the transportation of crude oil and varieties of petroleum products.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a volumetric flow measuring instrument. Background technique [0002] Volumetric flowmeter is a measuring instrument used to continuously measure the volume flow of liquid in a closed pipeline, suitable for the transportation of crude oil and various petroleum products. [0003] The existing volumetric flowmeters have the following disadvantages during use: first, when the liquid passes through the flowmeter, turbulent flow will be generated, which will reduce the pressure of the liquid, resulting in a decrease in measurement accuracy; second, since crude oil contains various Impurities, the parts used for metering in the flowmeter are easy to wear and often get stuck. Contents of the invention [0004] The purpose of the present invention is to overcome the shortcomings of the existing positive displacement flowmeter and provide a flowmeter with stable operation, high measurement acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F11/44
Inventor 陈还喜
Owner 陈还喜
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